Has anyone used this service or know of a similar one? The unique part is that guests contribute cash for you to spend on the items you choose to display in your registry. So instead of displaying a specific set of flatware from store x, you display an image of flatware and use the money to buy it where and when you want to. Also guests can contribute a portion of the cash for larger gifts. They take 4% of the money collected which seems fair, but I want to make sure these guys are trustworthy and provide a great user experience for our guests.